Results 91 to 100 of about 5,073 (240)

Modelling Neutron-Star Ocean Dynamics

Universe, 2023
We revisit the calculation of mode oscillations in the ocean of a rotating neutron star, which may be excited during thermonuclear X-ray bursts. Our present theoretical understanding of ocean modes relies heavily on the traditional approximation commonly
Fabian Gittins, Thomas Celora, Aru Beri, Nils Andersson   +3 more
doaj   +1 more source

The Quest for Pulsating M Dwarf Stars

Frontiers in Astronomy and Space Sciences, 2019
Recent fully non-adiabatic theoretical studies of M dwarf models show that they have the potential to excite radial, and low-order, low-degree non-radial modes, as well as solar-like oscillations, due to models being completely convective or having large
Cristina Rodríguez-López
doaj   +1 more source

Asteroseismology [PDF]

, 2013
Asteroseismology is the determination of the interior structures of stars by using their oscillations as seismic waves. Simple explanations of the astrophysical background and some basic theoretical considerations needed in this rapidly evolving field are followed by introductions to the most important concepts and methods on the basis of example ...
openaire   +2 more sources

Inverse Problems in Asteroseismology [PDF]

, 2022
Asteroseismology allows us to probe the internal structure of stars through their global modes of oscillation. Thanks to missions such as the NASA Kepler space observatory, we now have high-quality asteroseismic data for nearly 100 solar-type stars. In this thesis, new techniques to measure the ages, masses, and radii of stars are presented, as well as
openaire   +4 more sources

Confirmation of the Gaia DR2 Parallax Zero-point Offset Using Asteroseismology and Spectroscopy in the Kepler Field [PDF]

Astrophysical Journal, 2018
We present an independent confirmation of the zero-point offset of Gaia Data Release 2 parallaxes using asteroseismic data of evolved stars in the Kepler field.
J. Zinn, M. Pinsonneault, D. Huber, D. Stello   +3 more
semanticscholar   +1 more source

Seismic Signatures of Stellar Magnetic Activity—What Can We Expect From TESS?

Frontiers in Astronomy and Space Sciences, 2019
Asteroseismic methods offer a means to investigate stellar activity and activity cycles as well as to identify those properties of stars which are crucial for the operation of stellar dynamos.
René Kiefer, Anne-Marie Broomhall, Warrick H. Ball, Warrick H. Ball   +3 more
doaj   +1 more source

Looking into dark matter with asteroseismology

Frontiers in Astronomy and Space Sciences, 2022
Dark matter remains as an elusive component of modern Cosmology. According to previous research, stellar physics observables can be affected by the presence of hypothetical dark matter particles, which can be produced or accreted into the stars.
Adrián Ayala
doaj   +1 more source

PBjam: A Python Package for Automating Asteroseismology of Solar-like Oscillators [PDF]

Astronomical Journal, 2020
Asteroseismology is an exceptional tool for studying stars using the properties of observed modes of oscillation. So far the process of performing an asteroseismic analysis of a star has remained somewhat esoteric and inaccessible to nonexperts.
M. Nielsen, G. Davies, W. Ball, A. Lyttle, T. Li, O. Hall, W. Chaplin, P. Gaulme, L. Carboneau, J. Ong, R. Garc'ia, B. Mosser, I. Roxburgh, E. Corsaro, O. Benomar, A. Moya, M. J. D. O. Physics, Astronomy, U. Birmingham, Stellar Astrophysics Centre, D. Physics, A. University, Center for Space Science, N. Institute, N. Y. U. A. Dhabi, M. F. Sonnensystemforschung, D. O. Astronomy, Yale University, Irfu, Cea, Universit'e Paris-Saclay, Aim, Cnrs, U. Diderot, Sorbonne Paris Cit'e, Lesia, Observatoire de Paris, Universit'e Psl, Sorbonne Universit'e, U. Paris, A. Unit, S. O. Physics, Queen Mary University London, Inaf - Catania, Solar Science Observatory, Naoj, Department of Materials Science, Sokendai, Electrical Engineering, Electronics, Automation, A. P. Department, E.T.S.I.D.I, Polytechnic University of Madrid   +53 more
semanticscholar   +1 more source

Asteroseismology with COROT [PDF]

International Astronomical Union Colloquium, 2004
AbstractThe COROT project has been developed in the framework of the CNES small satellite programme, with European and Brazilian cooperation. It will be launched in 2006. It is dedicated to seismology and detection of telluric planets. It will perform relative broad-band photometry in visible light during very long (150 d) observing runs in the same ...
M. Auvergne, Annie Baglin, Gérard Vauclair, Eric Michel, Claude Catala   +4 more
openaire   +2 more sources

Inversions of Stellar Structure From Asteroseismic Data

Frontiers in Astronomy and Space Sciences, 2022
The advent of space-based photometry missions in the early 21st century enabled the application to asteroseismic data of advanced inference techniques until then restricted to the field of helioseismology.
Gaël Buldgen, Jérôme Bétrisey, Ian W. Roxburgh, Ian W. Roxburgh, Sergei V. Vorontsov, Sergei V. Vorontsov, Daniel R. Reese   +6 more
doaj   +1 more source